According to the study conducted by Turiel and his colleagues on whether children distinguish between moral and nonmoral issues, _____ rules apply to certain groups, are changeable, and are based on agreed-upon norms by a group of people

Studies have shown which of the following to be influenced by heredity?

a. intelligence and some mental disorders b. facial features and body type c. temperament d. all of these

The sampling distribution of z must be normally distributed to use the z test

Indicate whether the statement is true or false